gillespie



@uitrit tetrs gefilmt @Hita J. E. CILLESPIE, OE HARTFORD, CONNECTICUT,ASSIGNOE To HIMSELF ND CEORCE s. LINCOLN -AND COMPANY, OE SAME PLACE.

' Lettera Patent No. 80,403, date`d July 28, 1868.

IMPROVEMENT IN l(,ErilVEIthTORS.

Be it known that I, J. E. GILLESPIE, of Hartford, in the county ofHartford, and State of Connecticut, have. invented a new andusefulMachine for Governing the 4Speed of Motors ;V and I do herebydeclarethat the following is a full, clear, and exact description of theconstruction and operation ofthe same, reference beinghad t the annexeddrawings, making a part of this specification, in which- Figure 1 is alongitudinal elevation, and

Figure 2 is a transverse section.

v The object of my invention is to move the gates or valves of awater-wheel or other enginein a more direct manner, and to morecorrectly communicate the action of the governing-device to them, and atthe-same time to relieve the governing-device of the labor and friction.

i To enable those skilled in mechanics to construct and use myinvention, I will proceed to describe it in detail. Y Y

Similar letters refer to the same parts in both figures.

A is the bed-plate, upon which the machine is erected. v

` B B are stands, for supporting the shafts I and J.- The 4pulley-shaft,J, passes through .the stand B, and

also through the stand C, which has a spur-gear, C, 'securely fastenedto it. -The centre of the-gear is concaved to a greater depth than thethickness of its face. The stand is cut away behind the gear 0-, to makea m slot between the stand and gear, through which the spur-gear Sworks. 4

In the recess formed within the circle of the gear C" is a disk, H, witha pinion, e, secured to the hub of Adisk H, with the shield or-guard aupon its face.

The disk works loosely on the shaft J, and does not turn with it, but'isonly held inrpl'ace by. it.

Upon the end of the shaft J is a crank, 2, that enters a hole in thesliding block d, 'fitted into slot in the lever G, to whichareciprocating motion isgiven by the crank 2, as it is revolved by anysuitable means.

The lever G is Vpivoted at one end to the arm F projecting from the endof the clutch F, which has its journal in the stand D. Upon the otherend of the lever Gl is a pair of pawls, L L, which restupon the shield aof disk H. The shield ais of sufficient length to allow thereciprocating motion given to thelever Gby crank 2 to b e all of itperformed, and still the pawls rest upon the shield a.

The spur-gear S has a bearingin the arm that projects from the stand C.4

On the end of the bearing or journal of the gear S is`a pinion, that isactuated by the rack R.

The shaft I is designed to be connected to the gate of a water-motor orvalve of any other motor.- It may be used in connection with and has itsbearings 'in stand B and clutch F. It extends through the clutch F tothe block d in the lever G, but has no connection with it. y

Motion is given to the shaft I by means of the sliding part of theclutch E, which is feathered to the shaft I, and moved in the directionof its length by a forked lever or other suitable device.

The operation is as follows: Motion is given tio the shaft J by means ofthe pulley K, being belted to any convenient or suitable shaft, as isusual for driving or governing-device. The bevel-gear c engagesbevel-pinion Zi, and gives a rotary motion to the upright, M, which issupposed to represent the stafof an ordinary governor, not shown in thedrawing, but too well known to need particular description; therefore Iwill only say, in passing, `that N is an arm or projection from thegov'ernonthrough which the sleeve O Ipasscsand revolves. Upon any changeof the speedof the shafting taking place, the arin Nis either elevatedor depressed, as the speed is either increased or decreased. In eithercase the rodR is actuated, and a rotary motion given to the spur-gear S,which in turn nieshes with the pinion c on the hub of the shield-disk H,cau'singit to revolve partially, carrying the shield a from under thepewls L L, or more properly from under one of theni, Vcausing it toengage the teeth of the fixed gear C".Y

r.lhe spur-gear S and pinion e are so proportioned to one another thatone or more revolutions of the shielddisk H is the result of a change inthe governing-device from one extreme of its range to the other. Thepawls of the lever G, resting on thetshield a, are held clear oftheteeth of the fixed gear C. When no change is taking placeor has takenplace in the governing-device,or speed of the shafting to which the-governing-device is-attacherl, the reciprocating 'motion ofthe leverG,*causetl by the rotary motion of crank 2, is not interrupted.

But when the change indicated above takes placeor has takenY place, andthe shield a is moved to one side, and the pawl has engagedxthe teeth ofthe {xerl gear C, then the pawl becomes the fulcrum of the lever G,causing the opposite end of the lever G to be moved sulicient to allowthe crank 2 to complete its revolution, the pawl on the opposite side ofthe lever Gr being heid clear of theteeth of the xed gear C by theshield a. If the shield a moves no furthenthereciprocating nioton of thelever Gr is continued, but in a new place, or rather the pivoted end ofthe lever G has taken another position in the circle, and continues totake a new position in the circle at any change of the shield a.

It will be perceived that, at every change of the speed of the shafting,Athe arm F, to which the lever G is pivoted, assumes a new position,carrying the shaft I with it, by means of the clutch E F, and opening orclosing the gate or valve of the motoror other engine to which the shaftI may be attached. v

It will be seen, by the foregoing description, thatthe shaftI alwaystakes a positiony in exact imitation of the motion of the shield a,which is moved by the governing-device. i

The shield does not diler essentially 'from the well-known device knownas the `Schoeld device, except that it is caused to make one or morecomplete revolutions on its axis, instead of being confined to a verysmall part `of a revolution, as in the device referred to.

Neither do the pawls L L differxmueh from the pawls of the devicereferred to above, as theyreciprocate v over and en the shield a, butthe fixed gear C and revolving fulcrum F constitute a new and peculiaraction upon the gate oryalve of a water-motor, or lother engine to whichthey may be connected, not heretofore obtained. It will beseen .that therack R is a screw, working -in a worm-pinion, so called. A By rotatingrack R by any suitable means, the relative position of thegoverning-device to the spur-gear S and shield a is or may be changed,at will. Therefore,

What I claim as my invention, and desire to secure by Letters Patent,is-f l l. The clutch F, with its arm F, in combination with the lever Gand stand D, substantially as specified, for the purpose set forth. i i

2,. The shaft I and sliding portion of lclutch E, in combination withthe arm of the clutch F and the lever G, substantially as set forth.

3.- Shaft J, with its crank 2, in combination with the fixed gear ortoothed circle C, disk H, lever G, and revolving 'fulcrum F,substantially as specied, for the purpose set forth.

4. The screw-rack R and its wormpinion, injcombination with the gear Sand shield-disk H a', substantially as specified', for the purpose setforth. l

J. E. GILLESPIE.

Witnesses:

THOMAS McM'ANUs, 'NELLIE McMANUs.

